Revenue from Contracts with Customers - Schedule of Accounts Receivable with Customers (Details) - USD ($) $ in Millions		Dec. 31, 2018	Jan. 01, 2018
Accounts Receivables
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Receivables	[1]	$ 122	$ 97

[1] Does not include financing receivables from sales of VOIs. See Note 5: Timeshare Financing Receivables for additional information.